mirror of
https://github.com/deepseek-ai/deepseek-harness
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ec601ca13d
Machine-produced by `pnpm run rescope-vendor --apply` plus the regeneration it prints: `pnpm install` for the lockfile, `pnpm run gen-third-party-notices`, `verify-translation-pairing --write` for the touched bilingual pairs, `gen-doc-graphs`, and one typert snapshot whose ids embed character offsets. `pnpm run rescope-vendor --check` verifies the result. Renames nine vendored packages (cordis, cosmokit, schemastery and the six @cordisjs plugins) and every reference that resolves them: manifest names and dependency keys, module specifiers including declare-module merges, cordis.yml plugin names, tsconfig paths, every Markdown fence, and `docs/` prose. Directory names, upstream versions, and dependency ranges are unchanged, so vendor/README.md still reads as an upstream snapshot; its manifest table gains an upstream-name column so THIRD_PARTY_NOTICES keeps MIT attribution pointed at each fork's origin. The tutorial tier follows the rename end to end: its yaml fences named plugins the Loader can no longer resolve, its `ts ignore-check` fences disagreed with the compiled fences beside them, and its prose quoted both. The contracts that told readers to keep upstream names — the root convention and the vendoring cookbook's tree comment and manifest invariant — now say to rescope instead. Two rules read `@deepseek-ai/` as "another workspace plugin": the client bundle purity gate now names the vendored libraries a browser bundle inlines, and the files where a bare `cordis` is an agent-preset id keep that product data.
96 lines
3.3 KiB
Markdown
96 lines
3.3 KiB
Markdown
# 1. Your first plugin
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English | [中文](01-first-plugin.zh.md)
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In the loader configuration used here, a Cordis plugin module named-exports an `apply` function. When Cordis loads it, it calls `apply` with a **context** — the `ctx` object through which the plugin registers everything it contributes.
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## Write the plugin
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In your `tmp/cordis-tutorial` directory (see [setup](index.md#setup)), create `hello.ts`:
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```ts
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import type { Context } from '@deepseek-ai/cordis'
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export const name = 'hello'
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export function apply(ctx: Context) {
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console.log('hello from my first plugin')
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}
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```
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The `name` export is optional display metadata; it labels the plugin in diagnostics.
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## Compose the app
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This tutorial's launcher assembles the application from configuration. Create `cordis.yml`:
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```yaml
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- name: './hello.ts'
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```
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The file is a list of plugin entries. `name` is a module specifier — a relative path or an npm package name — and the loader mounts every entry. Entries start concurrently, so list position guarantees nothing about which plugin loads first; ordering comes from service dependencies (`inject`, [chapter 3](03-services.md)), not from position in the file.
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## Run it
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```sh
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node --import tsx ../../vendor/cordis/bin.js
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```
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Expected output:
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```
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hello from my first plugin
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```
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The process exits on its own once nothing is left running. What happened:
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1. The launcher created a root `Context` and mounted the **Loader** plugin.
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2. The Loader read `cordis.yml`, resolved `./hello.ts`, and mounted it as a child plugin.
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3. Cordis called your `apply(ctx)`.
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There is no framework bootstrap code in your file: a plugin describes what it contributes, and `cordis.yml` composes the application. The [`dsh` base](../../packages/bundle/base/cordis.patch.yml), for example, is a longer plugin composition that deployment overlays patch.
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## The two other plugin shapes
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A function is the most common form, but Cordis accepts three:
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```ts
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import { Service, type Context } from '@deepseek-ai/cordis'
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// 1. Function plugin (what you just wrote).
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export function apply(ctx: Context) {}
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// 2. Object plugin: an object with an `apply` method.
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export const objectPlugin = {
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name: 'object-plugin',
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apply(ctx: Context) {},
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}
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// 3. Class plugin: a Service subclass (covered in chapter 3).
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export class MyService extends Service {
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constructor(ctx: Context) {
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super(ctx, 'myTutorialService')
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}
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}
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```
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Use the function form until you need to expose a service; [chapter 3](03-services.md) covers when the class form earns its place.
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## Try breaking it
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Make `apply` throw:
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```ts ignore-check
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export function apply(ctx: Context) {
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throw new Error('apply exploded')
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}
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```
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Run again: the process dies with your error. A plugin that fails to load is a loud failure, not a skipped entry.
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One caveat worth knowing early: a config entry whose module cannot be **resolved** — a typo'd path or package name — is reported through the Cordis logger service instead of crashing the process, and at boot that report can be lost before a console exporter is watching. If a freshly added entry seems to do nothing, check the spelling first.
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Next: [Lifecycle and effects](02-lifecycle-and-effects.md) — what happens when a plugin unloads.
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[](https://github.com/deepseek-ai/deepseek-harness-sdk)
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